Open-source, privacy-focused collaborative workspace for notes, databases, kanban boards and AI-assisted writing; desktop, mobile and web clients with local-first storage.

74.4k stars5.7k forksAGPL-3.0last commit Actively maintained
Google Keep is a cloud note-taking app for creating, organizing, and sharing notes, checklists, voice memos, and image-based notes. It offers real-time sync across devices, labels/colors, reminders, and basic collaboration via a Google account.
Open-source, privacy-focused collaborative workspace for notes, databases, kanban boards and AI-assisted writing; desktop, mobile and web clients with local-first storage.

74.4k stars5.7k forksAGPL-3.0last commit Actively maintained
Memos is a lightweight, privacy-first self-hosted note-taking service with Markdown, fast search, and sharing features for personal notes, wikis, and team knowledge.

61.8k stars4.6k forksMITlast commit Actively maintained
Joplin is an offline-first, privacy-focused note and to-do app with end-to-end encryption, Markdown support, web clipping, and sync across desktop and mobile.

55.8k stars6.2k forkslast commit Actively maintained
Open-source, block-oriented personal knowledge manager with Markdown WYSIWYG, block-level two-way links, encrypted sync, Docker deployment and AI integrations.

45.5k stars2.9k forksAGPL-3.0last commit Actively maintained
Logseq is a privacy-first, open-source knowledge management app for networked notes, tasks, and collaboration using local Markdown or Org-mode graphs.

44.1k stars2.7k forksAGPL-3.0last commit Actively maintained
Open-source hierarchical notes and personal knowledge base with rich editing, full-text search, encryption, scripting, and optional self-hosted sync and web access.

37.1k stars2.5k forksAGPL-3.0last commit Actively maintained
Collaborative note-taking, wiki, and documentation platform with real-time editing, access control, and offline support. Built with Django and React/Next.js.
16.7k stars610 forksMITlast commit Actively maintained
Habitica is an open-source gamified task manager turning Habits, Dailies, and To-Dos into RPG quests with avatars, gear and social features.

14k stars4.4k forkslast commit Actively maintained
Open-source, self-hosted AI note-taking app for fast capture and organization, with Markdown notes and RAG-based natural language search.

10.8k stars761 forksGPL-3.0last commit Actively maintained
TiddlyWiki is a self-contained, highly customizable personal wiki that runs in the browser or on Node.js, enabling notes, knowledge bases, and documentation in one file.

8.6k stars1.3k forkslast commit Actively maintained
Open-source, web-based collaborative Markdown editor for real-time notes, diagrams, and slide presentations with revisions and access controls.

7.3k stars574 forksAGPL-3.0last commit Actively maintained
Standard Notes is an end-to-end encrypted notes app with secure file storage, offline access, and cross-platform sync, with optional self-hosting of the sync server.

6.6k stars539 forksAGPL-3.0last commit Actively maintained
Self-hosted, browser-based personal knowledge management platform with Markdown pages, wiki-style links, tasks, queries, and Lua scripting for automation.

5.7k stars450 forksMITlast commit Actively maintained
Offline-first file manager and personal knowledge workspace that organizes local files with tags, fast search, previews, and optional local AI features.
5.2k stars514 forksAGPL-3.0last commit Actively maintained
Vikunja is an open-source to-do and task management app with projects, sharing, assignments, and multiple views like list, Kanban, Gantt, and table.

4.9k stars572 forksAGPL-3.0last commit Actively maintained
Self-hosted personal management web app to organize notes, goals, contacts, passwords, schedules, payments, files, photos, and more in one place.

4.1k stars340 forksMITlast commit Actively maintained
Speakr is a self-hosted web app for recording or uploading audio, transcribing with AI (including diarization), and turning conversations into searchable, shareable notes.
3.5k stars291 forksAGPL-3.0last commit Actively maintained
Basic Memory gives AI assistants durable, local-first memory by reading and writing structured Markdown notes, enabling reusable context across conversations and tools.

3.5k stars240 forksAGPL-3.0last commit Actively maintained
Open-source, self-hosted task and project manager with hierarchical Areas → Projects → Tasks, smart recurring tasks, Telegram and API integrations.

3.2k stars228 forksMITlast commit Actively maintained
Self-hosted, database-less note-taking web app that stores notes as plain Markdown files in a folder, with tagging, wiki links, and full-text search.

3.2k stars196 forksMITlast commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 20 of 20 shipped a commit in the last six months. Licences in this list: AGPL-3.0, MIT, GPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Notes & Personal Knowledge Management.